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True Precision Sig P320 Compact 9MM Threaded Barrel Black Nitride TP P32CB XTBL UPC 719104534730
Product Description
The True Precision® Sig Sauer P320 Compact 9mm Threaded Barrel in Black Nitride (SKU: TP-P32CB-XTBL / UPC: 719104534730) delivers match-grade accuracy and suppressor-ready capability for 3.9-inch P320 Compact, Carry, X-Carry, and M18 pistols. Engineered with tighter lockup tolerances and refined lug chamfers compared to factory barrels, this drop-in upgrade elevates mechanical consistency for defensive carry, duty use, and competitive shooting.
Machined entirely in the United States from certified 416R stainless steel, each barrel undergoes a proprietary 6-groove broach-cutting process with a 1:10-inch right-hand twist rate and a SAAMI-spec 9x19mm Luger chamber. The Black Nitride surface treatment penetrates the steel to create an ultra-hard, low-friction case layer that resists bore erosion, holster wear, carbon fouling, and harsh cleaning solvents without altering critical dimensional tolerances.
Measuring 4.64 inches overall from breechface to muzzle crown, the barrel features precision 1/2x28 TPI threads paired with a knurled Black Nitride thread protector utilizing an integral high-heat Viton O-ring to prevent backing off under rapid fire. True Precision's updated No-LCI (Loaded Chamber Indicator) solid hood eliminates the top peephole cutout, keeping pistol-mounted red dot lenses clean and free from propellant blowback.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Fits 9mm Sig Sauer P320 Compact, P320 Carry, P320 X-Carry, and P320 M18 models utilizing 3.9-inch factory slide assemblies. CRITICAL WARNING: NOT compatible with 3.6-inch P320 X-Compact or Subcompact slides, 4.7-inch Full Size / M17 slides, or 5.0-inch X-Five bull-barrel slides. Because this barrel features a solid No-LCI hood, you MUST remove the mechanical Loaded Chamber Indicator (LCI) assembly from M18 or CA/MA-compliant slides prior to installation, or the slide will not go into battery. Early-generation X-Carry slides with tighter hood tolerances may require minor hand-fitting. Remove the thread protector and Viton O-ring before threading on a suppressor piston or compensator, and verify muzzle device alignment with an alignment rod prior to live fire.
- Ensure the host Sig Sauer P320 pistol is completely clear, magazine removed, and chamber visually and physically verified empty before field-stripping.
- Lock the slide to the rear, rotate the takedown lever clockwise to the 6 o'clock position, and carefully ease the complete slide assembly forward off the grip module and Fire Control Unit (FCU).
- Compress and remove the recoil spring guide rod assembly, lift the factory barrel upward and rearward out of the slide, and remove any factory LCI lever assembly from the slide if present.
- Unthread the included Black Nitride thread protector from the True Precision barrel, insert the barrel into the slide until the hood seats flush in the ejection port, reinstall the recoil spring assembly, and reattach the thread protector finger-tight against the Viton O-ring.
- Reinstall the slide onto the grip module, rotate the takedown lever back to the horizontal locked position, and perform manual cycling, lockup, and trigger-reset function checks prior to live-fire staging.
Key Features
- USA-Sourced 416R Stainless Steel: Precision CNC-machined from certified 416R bar stock with shallow X-Flute exterior styling and enhanced hood chamfers for superior barrel-to-slide lockup.
- 6-Groove Broach-Cut Rifling: Features a 1:10-inch right-hand twist rate and polished feed ramp engineered for optimal stabilization across FMJ, defensive JHP, and unplated cast lead projectiles.
- 1/2x28 Suppressor-Ready Muzzle Threads: Includes a matching Black Nitride thread protector fitted with a high-heat Viton O-ring to keep threads protected and secure under recoil.
- Optic-Friendly No-LCI Hood Geometry: Solid top barrel hood prevents hot propellant gases and carbon residue from venting upward onto slide-mounted red dot lenses.
- Black Nitride Case-Hardened Finish: Provides an ultra-durable, corrosion-resistant, low-friction exterior and bore surface built for high-round-count reliability.
Product Specifications
- Brand: True Precision, Inc.®
- Model/Series: Sig P320 Compact / Carry / M18 3.9" Threaded Barrel (No-LCI)
- MPN / SKU: TP-P32CB-XTBL / TPP32CBXTBL
- UPC: 719104534730
- Caliber: 9mm Luger (9x19mm SAAMI Spec)
- Barrel Length: 4.64 in Overall (For 3.9 in Slide Models)
- Thread Pitch: 1/2x28 TPI RH
- Rifling & Twist Rate: 6-Groove Broach-Cut, 1:10 in RH
- Material & Finish: Certified 416R Stainless Steel / Black Nitride
- Platform Compatibility: Sig Sauer P320 Compact, Carry, X-Carry, & M18 (9mm)
- Country of Origin: USA
